.prog-system-container {
  width: 100%;
  height: 706px;
  background: url(../../images/prog_system_bg.png) no-repeat;
  background-size: cover;
  background-position: center;
  .prog-system {
    width: 1200px;
    height: 100%;
    margin: 0 auto;
    ul {
      padding: 60px 10px;
      box-sizing: border-box;
      li {
        width: 530px;
        height: 198px;
        float: left;
        margin: 0 30px 30px 30px;
      }
      .icon1 {
        background: url(../../images/system_1.png) no-repeat;
        background-size: cover;
      }
      .icon2 {
        background: url(../../images/system_2.png) no-repeat;
        background-size: cover;
      }
      .icon3 {
        background: url(../../images/system_3.png) no-repeat;
        background-size: cover;
      }
      .icon4 {
        background: url(../../images/system_4.png) no-repeat;
        background-size: cover;
      }
    }
  }
}
